The reason why you fail an open book

(1)No, this is an eye examination
(2)The last one was in 2018
(3)Figure 15 shows atoms and the particles that make up the atoms
(4)be represented by Smallest of the following
(5)③ protons
(6)④ the nucleus of an atom
(7)April 03, 2020, 1038 PM. For Twitter
(8)Through the iPhone app
(9)7660 Retweet 2140 I like it
(10)Mr. Sham’s Green Bean 2 nkd4001 Day
(11)Reply to nkd400
(12)Ah! The answer is a quark